The Emperor paper size has impressively mammoth dimensions of 48 inches (1219 mm) wide by 72 inches (1829 mm) high, resulting in a remarkably vast total surface area of 3456 square inches. Known as Antiquarian Extra in some circles, Emperor sheets represent the most sizable format in the Imperial paper size system. The strikingly sizable Emperor pages have been traditionally used for specialized documentation of expansively broad or extra fine detailed subject matter warranting huge surface dimensions to accommodate the scope or precision of the content. Some applications benefiting from Emperor's enormous spreads include antiquarian cartography, family histories spanning centuries, ornately detailed artwork/posters, superscaled architectural/engineering plans, massively enlarged technical drawings, wall-sized business data charts, and contemporaneously bound historical record folios chronically vast subjects across many oversized pages. So for subject matter well exceeding conventional sizes, Emperor's tremendous area as the imperial system’s largest page has afforded copious space for unusually sweeping or magnified documentation purposes.